MRB-25
has a 20 inch blade diameter. The MRB-25 was produced after the MRB-20.
Also applies to the series 3 MRB, mounting is the same.
The blade diameter is 20 inch for the MRB-25 and series 3.
The blades are available in 21.9 inch diameter from Exactrix®.

MRB-25,
1 spacer block required.
Adjust scraper to the edge of the blade.

MRB-25

MRB-25

MRB-25
Triplex with bent tube.

MRB-25
Roll pins set blade to injector clearance.

During the 2010
crop production year several saturated soil conditions and unusual weather
conditions prompted a different approach to reverse tube injection of
nutrients with the Bourgault MRB-25 opener.

B. Mud was a
challenge.....and some operators did have problems setting tubes correctly
across the machine width.

C. The 20 inch
diameter x 1/4 thick blades were operated well beyond the typical blade
replacement criteria...requiring more adjustment and a stronger tube
design. Blades were operated to 17.5 inches before replacement.

It became
apparent that acres could be increased with some changes to the injection
mounting and injection point using time proven stainless steel TIO holders
retained with roll pins......with additional chrome wear plates added at
the injection tip.

1.The 2KP/2KM
Check Valve is located 2 feet away from injection point at frame.

2. The check
valve can also be housed in a sectioned steel pipe housing . Optional.
Just in case the Check Valve location needs to be moved in to the range of
the sunflower stalks.

3. The Bourgault
MRB-25 Triplex adjustment for wear is made by relocating spacers and
locating Shims correctly. This takes away the guess work of setting the
injection point.

4. The adjustment
for wear is not required until the blade has worn 1 inch.

5. The housing
will not deform in mudding conditions. Bending of the housing has not
occurred to date.

6. The housing
uses a triple TIO holder....allowing up to 3 products to be mixed...or an
alternate injection TIO for NH3.

7. The MRB-Triplex
is quickly removable.

8. The Triplex
TIO holder (Bourg 128) is held in place with two roll pins….and is two
position mounted in a Hi/Lo option as the conditions merit. The TIO holder
design has been utilized since the Flexicoil 5 Paired Row Stealth opener
was developed 6 years ago.

9. A hard chrome
wear tip is installed to protect the TIO in case the blade wears down too
far before adjustment. The Chrome insert wear tip is utilized to assure
the TIO’s cannot be worn by the blade or the soil.

10. The three
injection lines are protected in spiral wrap plastic tubing that is very
durable and retained with a stainless steel hose clamp.

ExactrixTM
Global Systems LLC
4501 East Trent Ave.
Spokane, WA 99212
(509) 535.9925 fax(509) 535.9989Buy or rent the ExactrixTM
Direct Injection System and get top support at a fraction of the cost of existing systems.